Adjustable hat-pin.



F. A. ROJAS. ADJUSTABLE HAT PIN.

APPLIOATION IILED HA3. 2, 1911.

1,062,41 7. Patented May 20, 1913.

COLUMBIA PLANOCIRAPH CO.. WASHINGTON D c FLORICEL A. ROJAS,OIEIROVIDEENCE, RI-IODE ISLAND.

. ADJUSTABLE 'H-ATFPIN.

shortened or lengthened as desired, to reach across different sizes ofhat crowns.

A hat pin combining this novel feature will be of great service to thepublic, as it will tend to avoid the many fatalities which result frominjuries inflicted by the sharp points of the hat pins protruding,unnecessarily, too far beyond the hat crown.

The particular feature of my invention is, to provide a hat pin withmeans by which a portion of the head end of the stem can be stored upwithin the ornamental top, for the purpose of shortening or lengtheningthe pin as desired; said portion of the stem being afterward firmlysecured to the ornamental top by means of any suitable locking device.

I have illustrated my invention in the accompanying drawing, in whichsimilar letters refer to similar parts.

In this drawing, Figure 1, is a front view of a hat pin with theadjust-able pin attached. Fig. 2, is a plan view of the locking devicein section, and the pin stem locked in position. Fig. 3, is an end viewof the locking device with the pin stem shown in section. Fig. 4:, showsthe hat pin stem proper with upset end a, and the dangerous sharp pointe.

As shown in Fig. l, m, is the pin stem, a portion of which only isshown.

t, and t, are jaws of the locking device secured to the ornamental pinhead p.

Z), is a sleeve which, by the screw arrangement shown at n, in Fig. 2,is made to screw back and forth along the direction of the length of thepin. The end a, of the pin stem m, is upset for the purpose of insuringagainst the ornamental head falling ofi should the locking device becomeloosened.

The locking device is more clearly shown in Figs. 2 and 8. In thesefigures, the core or member 7, is of a hollow cylindrical form,

Specification oflLetters Patent.

Patented May 20, 1913.

Application filed. March 2, 1911. SeriaINo. 611,871.

the outside diameter of which is turned down to any suit-able size atthe end 9, for a convenient distance along the direction of its axle;this is done for theapurpose of providing ready means by which thismember could be easily controlled during the operation of soldering itto the pin head 39, Fig. 1, by inserting this end g, in a hole of equaldiameter made at h, in the ornamental pin head, Fig. .1. From the end f,Fig.2, thiscore is split diametrically along its axle to a convenientdistance .8, in preferably a or as many sections as desired; thesesections are shown at t. From the end "g, the diameter of the core isbored to any convenient distance (Z,'to atrifie'larger size [than whatit is from d, to 7. This will form the jaws t. The end, f, of the coreis beveled as shown, for the purpose of providing means by which thesleeve Z2, when screwed on core n, will force the jaws t, inwardlyagainst the pin stem m, holding the same firmly at any partof its storedlength. For this purpose, sleeve 1), is also constructed in a hollowcylindrical form and in which the end 76, is upset or crowned so thatits inner surface will fit or conform to the outer surface of thebeveled jaws t.

The head a, of the pin stem m, is upset to a diameter a trifle smallerthan the inner diameter of the core at the end 9. By removing the sleeveb, and soldering the core r, on the ornamental head as previouslystated, the sections 2?, will in turn be made to spread sufficiently farapart as toallow the head a, to pass through jaws t, after which thesections 25, will spring back into position checking thereby, by meansof shoulders cl, any tendency of the ornamental pin head to slip off thepin stem. A firm grip of the ornamental pin head on the pin stem m, setat any desired length, will be obtained by tightly screwing the sleeve6, on the cylindrical core 1'. A look nut arrangement could be used inconnection with sleeve 6, if desired, to insure a greater stability ofthis device. In this particular case, the action of the locking device,is attained by the combined effect of three mechanical features, viz:The screw thread cut on both the core and the sleeve, the inclined planeefiect between the crowned end of the said sleeve sliding on the beveledend of the vise, and the springing nature of the jaws of the vise abouttheir point of conjunction 8. By unscrewing said sleeve ?2, the jaws tof the vise,

will release pin stem m, whose protruding length could then be increasedor decreased as desired. The length of the pin being decided upon,sleeve 5, will be screwed on core a", forcing thereby the jaws t, ofsaid core to firmly secure in position the pin stem m.

What I claim as my invention and desire to secure by Letters Patentis 1. In an adjustable hat pin, the combination with a head having asleeve-like extension externally screw threaded and longitudinally splitand tapered at one end to provide clamping jaws, the bore of said sleevebeing reduced in diameter at its tapered end, a pin slidable in saidsleeve provided with a crown, the diameter of said crown being slightlyless than the inner diameter of said sleeve, but larger than thediameter of the reduced port-ion of its bore, and an internally threadedcap provided with a tapered end, the threads of said cap being adaptedto mesh with those of said sleeve, whereby the tapered end of said capwill engage the tapered end of said sleeve, substantially as and for thepurpose specified.

2. In an adjustable hat pin, the combination with a head having asleeve-like extension longitudinally split and tapered at one end toprovide clamping jaws, the bore of said sleeve being reduced in diameterat its tapered end, a pin slidable in said sleeve provided with a crown,the diameter of said crown being slightly less than the inner diameteror" said sleeve, but larger than the diameter of the reduced portion ofits bore, a cap provided with a tapered end, and means for securing saidcap to said sleeve and forcing the tapered end of said cap against thejaws of said sleeve, substantially as and for the purpose specified.

FLORIOEL A. ROJAS.

Vitnesses:

BESSIE Gt, CAPRON, SIMON S. LAFHAM, J r.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

